Unable to connect using net/ftp in ruby - ruby

Question

I am getting following error when I am trying to connect the FTP server
ftp = Net::FTP::new("example.sg","username","password")
Errno::ECONNREFUSED: Connection refused - Connection refused
from org/jruby/ext/socket/RubyTCPSocket.java:121:in `initialize'
from org/jruby/RubyIO.java:876:in `new'
from org/jruby/ext/socket/RubyTCPSocket.java:147:in `open'
from /opt/jruby/lib/ruby/1.8/net/ftp.rb:159:in `open_socket'
from /opt/jruby/lib/ruby/1.8/net/ftp.rb:175:in `connect'
from /opt/jruby/lib/ruby/1.8/monitor.rb:191:in `mon_synchronize'
from /opt/jruby/lib/ruby/1.8/net/ftp.rb:174:in `connect'
from /opt/jruby/lib/ruby/1.8/net/ftp.rb:136:in `initialize'
from (irb):7:in `evaluate'
from org/jruby/RubyKernel.java:1083:in `eval'
from /opt/jruby/lib/ruby/1.8/irb.rb:158:in `eval_input'
from /opt/jruby/lib/ruby/1.8/irb.rb:271:in `signal_status'
from /opt/jruby/lib/ruby/1.8/irb.rb:155:in `eval_input'
from org/jruby/RubyKernel.java:1410:in `loop'
from org/jruby/RubyKernel.java:1183:in `catch'
from /opt/jruby/lib/ruby/1.8/irb.rb:154:in `eval_input'
from /opt/jruby/lib/ruby/1.8/irb.rb:71:in `start'
from org/jruby/RubyKernel.java:1183:in `catch'
from /opt/jruby/lib/ruby/1.8/irb.rb:70:in `start'
from /opt/jruby/bin/jirb:13:in `(root)
I am able to access the same website from a browser using ftp://example.sg.
Any ideas why net/ftp would have issues accessing the site?

Answer 1

Works using JRuby 1.7.4:
Welcome to the JRuby IRB Console [1.7.4 (1.9.3)]
irb(main):001:0> require 'net/ftp'
true
irb(main):002:0> ftp = Net::FTP.new('ftp.ruby-lang.org', 'anonymous', '')
#<Net::FTP:0x4e2d4656 #mon_count=0, #mon_owner=nil, #logged_in=true, #sock=#<TCPSocket:fd19>, #last_response="200 Switching to Binary mode.\n", #last_response_code="200", #passive=false, #resume=false, #binary=true, #debug_mode=false, #welcome="230 Login successful.\n", #mon_mutex=#<Mutex:0x7e64e032>>
irb(main):003:0> ftp.list
["drwxrwxr-x 5 106 111 4096 Dec 25 23:42 pub"]
Is it working for you if you try ruby-lang.org site?
I see that you used Net::FTP::new instead of Net::FTP.new, but it shouldn't matter :-)